#! /usr/bin/env python
# -*- coding: utf-8 -*-

# *************************************************************
#     Filename @  defdef.py
#       Author @  Huoty
#  Create date @  2015-06-29 11:22:28
#  Description @  
# *************************************************************

def once():
    def sub(s):
        return s
    return sub

# Script starts from here

f =  once()
print f("hello")
